936 



Observations with the Seismometer ; — A. Cayley, on the Progress of Theoretical 

 Dynamics ; — Report of a Committee appointed to consider the formation of a 

 Catalogue of Philosophical Memoirs. 



Together with the Transactions of the Sections, Dr. Daubeny's Address, and 

 Eecommendations of the Association and its Committees. 



PROCEEDINGS OF the TWENTY- SEVENTH MEETING, at 

 Dublin, 1857, Published at 15s. 



Contents : — A. Cayley, Report on the recent progress of Theoretical Dynamics ; 

 — Sixteenth and Final Report of Committee on Experiments on the Growth and 

 Vitality of Seeds; — James Oldham, C.E., continuation of Report on Steam Navigation 

 at Hull ; — Report of a Committee on the Defects of the present methods of Measur- 

 ing and Registering the Tonnage of Shipping, as also of Marine Engine-Power, and 

 to frame more perfect rules, in order that a correct and uniform principle may be 

 adopted to estimate the Actual Carrying Capabilities and Working-power of Steam 

 Ships ; — Robert Were Fox, Report on the Temperature of some Deep Mines in Com- 



-« a'l + '/3'| + 'S«|-t-» 

 wall ; — Dr. G. Plarr, de quelques Transformations de la Somme 2<. -z H — i—. — . 



a §tant entier negatif, et de quelques cas dans lesquels cette somme est exprimable 

 par une combinaison de factorielles, la notation a'\ + ' designant le produit des 



facteurs o (a+1) (a+2) &c (a + t -1); — G. Dickie, M.D., Report on the Marine 



Zoology of Strangford Lough, County Down, and corresponding part of the Irish 

 Channel ; — Charles Atherton, Suggestions for Statistical Inquiry into the Extent to 

 which Mercantile Steam Transport Economy is affected by the Constructive Type of 

 Shipping, as respects the Proportions of Length, Breadth, and DejDth ; — J. S. Bower- 

 bank, Further Report on the Vitality of the Spongiads ; — Dr. John P. Hodges, on 

 Flax ; — Major-General Sabine, Report of the Committee on the Magnetic Survey of 

 Great Britain ; — Rev. Baden Powell, Report on Observations of Luminous Meteors, 

 1856-57 ;— C. Vignoles, on the Adaptation of Suspension Bridges to sustain the 

 passage of Railway Trains; — Prof. W. A. Miller, on Electro- Chemistry ; — John 

 Simpson, Results of Thermometrical Observations made at the Plover''s Wintering- 

 place, Point Barrow, latitude 71° 21' N., long. 156° 17' W., in 1852-54 ;— Charles 

 James Hargreave, on the Algebraic Couple ; and on the Equivalents of Indetermi- 

 nate Expressions ; — Thomas Grubb, Report on the Improvement of Telescope and 

 Equatorial Mountings ; — Prof. James Buckman, Report on the Experimental Plots 

 in the Botanical Garden of the Royal Agricultural College at Cirencester ; — William 

 Fairbairn, on the Resistance of Tubes to Collapse ; — George C. Hyndman, Report of 

 the Proceedings of the Belfast Dredging Committee ; — Peter W. Barlow, on the 

 Mechanical Effect of combining Girders and Suspension Chains, and a Comparison 

 of the Weight of Metal in Ordinary and Suspension Girders, to produce equal de- 

 flections with a given load ; — J. Park Harrison, Evidences of Lunar Influence on 

 Temperature ; — Report on the Animal and Vegetable Products imported into Liver- 

 pool from the years 1851 to 1855 (inclusive) ; — Andrew Henderson, Report on the Sta- 

 tistics of Life-boats and Fishing-boats on the Coasts of the United Kingdom. 



Together with the Transactions of the Sections, the Rev. H. Lloyd's Address, and 

 Recommendations of the Association and its Committees. 



PROCEEDINGS of the TWENTY-EIGHTH MEETING, at Leeds, 

 September 1858, Published at 20s. 



Contents : — R. Mallet, Fourth Report upon the Facts and Theory of Earthquake 

 Phenomena ; — Rev. Prof. Powell, Report on Observations of Luminous Meteors, 1857- 

 1858 ; — R. H. Meade, on some Points in the Anatomy of the Araneidea or true Spiders, 

 especially on the internal structure of their Spinning Organs ; — W. Fairbairn, Report 

 of the Committee on the Patent Laws ; — S. Eddy, on the Lead Mining Districts of 

 Yorkshire ; — W. Fairbairn, on the Collapse of Glass Globes and Cylinders ; — Dr. E. 

 Perceval Wright and Prof. J. Re4y Greene, Report on the Marine Fauna of the South 

 and West Coasts of Ireland ; — Prof. J. Thomson, on Experiments on the Measurement 

 of Water by Triangular Notches in Weir Boards ; — Major-General Sabine, Report of 

 the Committee on the Magnetic Survey of Great Britain ; — Michael Connel and 

 William Keddie, Report on Animal, Vegetable, and Mineral Substances imported 

 from Foreign Countries into the Clyde (including the Ports of Glasgow, Greenock, 



